Presentation is loading. Please wait.

Presentation is loading. Please wait.

Black Holes.

Similar presentations


Presentation on theme: "Black Holes."— Presentation transcript:

1 Black Holes

2 Objectives By the end of this presentation you will be able to:
Explain What a Black Hole Is Explain how Black Holes Form Describe the Different Types of Black Holes Describe the Structure of a Black Hole List Some of the Properties of Black Holes Describe the Behavior of Black Holes

3 1. What Are Black Holes? Definition
a celestial body so dense that light or other electromagnetic radiation cannot escape its gravitational pull a region where matter collapses to infinite density, and where, as a result, the curvature of space-time is extreme

4 1. (cont.) Curvature of Space-Time

5 2. How Do Black Holes Form? Enormous gravitational pull is necessary to create a black hole - caused by a star collapsing. When a star’s core has been burned up entirely, the rest of the star will pull into the empty space and create a new core. If that material will not burn, the star is dead. If the core continues to compress into itself, and if it has enough mass, the star will become a black hole.

6 3. Types of Black Holes Two Types:
Schwarzschild - Non-rotating black hole Kerr - Rotating black hole

7 3. (cont.) Types of Black Holes
1. Schwarzschild 2. Kerr

8 4. Structure of Black Holes
Schwarzschild: simplest black hole; core does not rotate. Singularity - The collapsed core Event horizon - The opening of the hole Kerr: Ergosphere - An egg-shaped region of distorted space around the event horizon (The distortion is caused by the spinning of the black hole, which "drags" the space around it.) Static limit - The boundary between the ergosphere and normal space

9 5. Properties of Black Holes
Three properties that can or could be measured: Mass Electric charge Rate of rotation (angular momentum)

10 6. How Do Black Holes Behave?
Can create jets of gas May create gamma ray bursts Can evaporate

11 7. Summary Black holes are incredibly dense They curve space-time
Not even light can escape They form from massive star collapse 2 types = Schwarzchild & Kerr Structure = singularity + event horizon They have mass, electric charge, and rotation rates They can create jets of gas, gamma ray bursts, and evaporate


Download ppt "Black Holes."

Similar presentations


Ads by Google